Wide dynamic range power detection in a communication system

Details Wide dynamic range power detection in a communication system Wide dynamic range power detection in a communication system

2007-02-26

2009-06-30

Jackson, Blane J (Department: 2618)

Telecommunications

Transmitter

Measuring, testing, or monitoring of transmitter

C455S126000, C455S127200

Reexamination Certificate

active

07555270

ABSTRACT:
Power detection system and method provide for a wide dynamic range power detection. The system may incorporate a coupler to sample a transmitted or received power. Such sampled power is then directed to a detector configured to generate a voltage from its rectified current. Such voltage after optional filtering and buffering is directed to multiple amplifiers wherein each amplifier has a distinct associated gain. For improved noise immunity, a differential output amplifier may be used. For low power levels, the output of an amplifier with a large gain is directed to an analog-to-digital converter (ADC), wherein the analog voltage is quantized into a digital value. As power is increased, the output of an amplifier stage with a smaller gain can then be directed to the ADC such that saturation of the ADC is avoided. Hysteresis is implemented so to avoid undesirable and unnecessary rapid switching.

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